Summary Table Of G Hi-Touch Protections - ABB SACE Emax E1.2 Operating Instructions For The Design Engineer

Summary table of G Hi-Touch protections

ABB ANSI Threshold
(1)
I21 = 0.6...10 In; step = 0.1 In
S2(V)
51V Ul2 = 0.2...1 Un; step = 0.01 Un
(Step)
Ks2 = 0.1...1; step = 0.01
I21 = 0.6...10 In; step = 0.1 In
S2(V)
Ul2 = 0.2...1 Un; step = 0.01 Un
51V
(Linear) Uh2 = 0.2...1 Un; step = 0.01 Un
(5)
Ks2 = 0.1...1; step = 0.01
Q24 = -1...-0.1 Sn; step = 0.001 Sn
Q25 = -1...-0.1 Sn; step = 0.001 Sn
RQ2 40/32R Kq = -2...2; step = 0.01;
(6)
Kq2 = -2...2; step = 0.01
Vmin = 0.5...1.2 Un; step = 0.01
f28 = 0.4...10 Hz / s
ROCOF 81R
step = 0.2 Hz / s
(1)
ANSI / IEEE C37-2 encoding.
(2)
Calculation of t is valid for values exceeding the tripping threshold of the protection.
t
(3) Valid tolerances with steady-state energized trip unit or trip unit energized by auxiliary power supply, tripping time ≥ 100 ms, temperature and
currents within operating limits. If these conditions are not guaranteed, the tripping time tolerance of ± 10 % will become ± 20%.
(4)
The trip unit accepts the I21 and Ks2 parameters provided that their product is greater than or equal to 0.6 Hz / s: Ks2 * I21 >= 0.6 Hz / s.
(5)
The tripping threshold of the current for voltage values between Ul2 and Uh2 is calculated by performing the linear interpolation between the
thresholds Uh2 and I21 (first point on the line) and Ul2 and Ks2 * I20 (second point on the line). I
Ul2) + I21.
(6)
The tripping threshold of protection RQ2 is calculated by the intersection of the 2 straight lines formed by Q24 and Kq (P
Q24) and from Q25 and Kq2 (P
sample graph in the chapter on the RQ protection).
(7)
The setting of thresholds Uh2 and Ul2 must guarantee the following constraint: Uh2 > Ul2.
(8)
± 20 % for the threshold 0.4 Hz / s.
100 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A
(4)
(4)
(4)
(7)
(7)
(4)
= Q * Kq2 + Q25). If the constants Kq and Kq2 are set to 0, the highest threshold will apply (see the
threshold measured
Tolerance
Tripping time
threshold
t21 = 0.05...30 s
± 10 %
step = 0.01 s
t21 = 0.05...30 s
± 10 %
step = 0.01 s
t24 = 0.5...100s
± 10 %
step = 0.1 s
t28 = 0.5...10 s
± 10 %
(8)
step = 0.01 s
Calculation
Tolerance t
formula t (2)
t
The better of the two
values:
t = t21 ± 10 % or ± 40 ms (for
t
a time set < 5 s) / ± 100
ms (for a time set > 5 s)
The better of the two
values:
t = t21 ± 10 % or ± 40 ms (for
t
a time set < 5 s) / ± 100
ms (for a time set > 5 s)
The better of the two
values:
t = t24 ± 10 % or ± 40 ms (for
t
a time set < 5 s) / ± 100
ms (for a time set > 5 s)
The better of the two
t = t28 values:
t
± 20 % o 200 ms
= [I10 * (1 - ks2) * (U
threshold measured
threshold
Ekip Touch protection trip unit | 13 - G Hi-Touch protections
ABB | SACE Emax 2
(3)
t
- Uh2)] / (Uh2 -
= Q * Kq +
measured